Spindle-bolster



(No Model.)

W. T. CARROLL.

SPINDLE BOLSTER.

No. 344,303. Patented June 22, 1886.

I \[E km. Z Cvr aw www UNITED STATES PATENT OEEIcE.

WILLIAM T. CARROLL, OF WORCESTER, ASSIGNOR TO THE SA\V YER SPINDLECOMPANY, OF BOSTON, MASSACHUSETTS.

SPlNDLE-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 344,303, dated June 22,1886.

Serial No. 152,644. (No model.)

To all whom i2 may concern:

Be it known that I, WILLIAu T. CARROLL, of Worcester, county of\Vorcester, State of Massachusetts, haveinvented an Improvement inSpindle-Bolsters, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention has for its object to improve the construction ofspindle-bolsters; and itconsists, essentially, in a bolster-holderadapted to be placed in a hole in a rail, and the nut attached to thelower end of said holder and provided with a pin or projection, combinedwith a bolster provided with a foot, which is entered loosely within andextended through the bolster-holder, the foot of the bolster below therail engaging the pin or projection of the nut, the portion of thebolster above its foot resting upon the holder being extended upward,and being made of small diameter to enter a sleeve-whirl, the upper endof the bolster being of smaller diameter than the diameter of thebolster-holder above the rail, whereby the sleeve-whirl may be made ofsmall diameter, as will be described.

To enable me to employ a very small whirl, I have devised a bolsterhaving a foot, which latter enters a bolster-holder in the step-rail,the top of the bolster entering the sleeve-whirl, the usual support orcase extended into the sleeve-whirl being dispensed with.

The foot of the bolster is forked or adapted to engage a pin orprojection sustained by the nut which retains the bolster-holder inplace in the rail, the pin preventing rotation, yet not interfering withsuch lateral movement of the bolster as is necessary for the propercentering of the spindle to its load.

Figure 1 in side elevation represents a sleevewhirl spindle, itssupport, and rail, to enable my invention to be understood, and Fig. 2 asectional detail of the parts in Fig. 1 with the spindle removed.

The step-rail A and spindle B having sleevewhirl C are all as common,except that the whirl is a little smaller than usual. The rail hasapplied to it the bolster-holder D, provided, as shown, with a collar,2, to rest on the rail, and at its lower end with a screw-thread toreceive the nut E, which is screwed upon the lower end of thebolster-holder to retain the latter in place. This nut is provided withtwo cars, 3 3, which receive a cross pin or piece, 4, which latter isengaged by the foot 6 of the bolster F, the said foot being herein shownas forked to straddle the said pin. The part of the bolster above theflange or collar 0 enters the sleeve-whirl O of the spindle, as shown inFig. l by dotted lines. The pin 4 of the nut co-operates with thebolster to restrain its rotation with the spindle.

The foot of the bolster enters the bolsterholder with what is known asa. loose fit, to thus enable sufficient movement of the former to enablethe spindle to run steadily, and, if desired, the foot ot'the bolstermay be grooved annularly for the reception of elastic or yieldingpacking p, the fit between the bolster-foot and bolster-holder beingless close when the packing is used.

The spindle may be oiled through the oilhole 6.

The upper end of the bolster-holder on the lower side of the collar maybe somewhat tapered to leave a tapering space, 8, between them.

By providing the bolster with a foot placed in a bolster-holder, asdescribed, it is possible to do away with the usual supporting-case,such as shown in United States Patent No. 227,129, the upper end of thesaid case being extended into the sleeve-whirl to constitute the supportfor the bolster or part which comes directly against the pintle of thespindle and forms a lateral or side bearing therefor, and consequently Iam enabled to make the part of the bolster which enters the sleeve-whirlof less diameter than the combined case, bolster, and packing of thepatent referred to, which, without sacrifice of actual working strengthof the parts, enables the sleeve-whirl to be made of smaller diameter,which, besides reducing the weight of the spindle, also enables itsspeed to be increased without increasing the speed of the usualdriving-drum.

Prior to my invent-ion I am not aware that the nut to hold thebolster-holder in place has ever been made to support a pin orprojection to co-operate with the bolster and restrain it from rotatingwith the spindle. Employing the nut, as described, to restrain therotation of the bolster enables the latter to be easily removed withoutdetaching the nut.

I claim- 1. The bolster-holder adapted to be applied to a rail, and thebolster provided'with a collar and with a downwardly-extended notchedfoot placed in the said holder loosel the portion of the bolster abovethe collar being stiff and rigid, combined with thesleeve-whirl spindleextended down outside of and next the bolster, the pintle of the spindleentering the hole in the bolster, which also serves as a step for thespindle, and with the nut having the pin 4, which is engaged by theslotted lower end of the bolster, all substantially as described.

2. The bolster-holder adapted to be placed in a hole in a rail, and thenut E, applied to the lower end of the bolster-holder, and provided witha pin or projection, 4, combined with the bolster provided with a footto enter the said bolster-holder loosely, the foot of the bolster belowthe rail co-operating with the pin or projection of the said nut torestrain the rotation of the bolster in the bolster-holder,substantially as described.

3. The rail, the bolster-holder adapted to be placed in a hole in thesaid rail, and a nut to retain the said holder in place, combined with abolster having a collar and a foot below the collar, the top surface ofthe bolsterholder and the under surface of the collar being shapedrelatively to each other, as described, whereby a tapering space is leftbetween the under side of the collar and the top of the bolster-holder,to operate all substantially as and for the purpose set forth. 4. Therail, the bolster-holder therein, and the bolster-holding nut E, havingthe pin or projection, combined with the rigid one-piece bolster havinga collar, a foot below it to enter the bolster-holder loosely, the saidfoot being provided with an elastic packing, and being shaped to engagethe pin or projection of 45 the said nut, all substantially asdescribed.

In testimony whereofI have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM T. CARROLL.

\Vitncsses:

A. WHEELER, GEo. A. DRAPER.

